Morronea, A New Genus Segregated from Panicum (Paniceae, Poaceae) Based on Morphological and Molecular Data

SCATAGLINI, M. AMALIA; ZULOAGA, FERNANDO OMAR

SYSTEMATIC BOTANY

AMER SOC PLANT TAXONOMISTS

Lugar: Laramie; Año: 2013 vol. 38 p. 1076 - 1086

0363-6445

Taxonomic features of species of Panicum  section Parviglumia are reviewed and compared with those of other taxa in tribe Paniceae. The new genus Morronea is proposed on the basis of morphological characters, i.e., plants growing at forests edges, with membranous-ciliate ligules, lower glume reduced, 1/6 to ¼ the spikelet length, lower palea and lower flower absent, and upper anthecium indurate with simple papillae and conspicuous macrohairs all over its surface, and chloroplast ndhF sequences to include six species ranging from Mexico to Argentina.  The new combinations: Morronea arundinariae, M. cayoensis, M. guatemalensis, M. incumbens, M. parviglumis, and M. trichidiachnis are proposed and the new genus is compared with other genera of the tribe Paniceae.